CN104194837B - A kind of harmless treatment process of organic wastewater and its device - Google Patents
A kind of harmless treatment process of organic wastewater and its device Download PDFInfo
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- CN104194837B CN104194837B CN201410406467.6A CN201410406467A CN104194837B CN 104194837 B CN104194837 B CN 104194837B CN 201410406467 A CN201410406467 A CN 201410406467A CN 104194837 B CN104194837 B CN 104194837B
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- organic wastewater
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Abstract
The invention discloses a kind of harmless treatment process of organic wastewater, including step, carries out mechanical filter process to the organic wastewater from wastewater trough；By the flow and pressure of plunger displacement pump VFC organic wastewater, it is delivered in waste water preheater and preheats；Organic wastewater after preheating is delivered to gas generator, after organic wastewater is sufficiently mixed with coal dust in coal gas of high temperature producer, carries out combustion oxidation course of reaction, generates industrial gas；The invention also discloses realizing the device of the organic wastewater harmless treatment process.The invention has the beneficial effects as follows, vapor is substituted as reaction raw materials by the use of organic wastewater, it is sufficiently mixed with coal dust in coal gas of high temperature producer, directly industrial gas can be generated combustion oxidation without the need for catalyst, solve the intractable problem of organic wastewater, innocent treatment procedure realizes waste water reuse, reduces environmental protection pressure, reaches the purpose for improving the performance of enterprises.
Description
Technical field
The present invention relates to a kind of harmless treatment process and its device containing long-chain macromolecule organic wastewater, using high temperature
Organic matter in waste water is directly translated into available gas, and alternative materials steam production coal gas, is reached organic by the mode of burning
The purpose that thing Sewage treatment is recycled.
Background technology
It is typically accompanied by containing organic matter in the technical process such as coal gasification, the dry distillation of coal, coking, coal liquefaction or PETROLEUM PROCESSING
Waste water is produced, and is characterized in that one side wastewater flow rate is big, and intractability is high, and operating cost is high；On the other hand, without advanced treating
The waste water of discharge has serious infringement to surrounding environment or even downstream environment water.Usually contain in waste water oils, phenols and its
Organic emulsion or water soluble organic substance of his broad array etc..The requirement of relative environmental protection, the useless Organic substance in water after recovery
Content or abnormal height, need effectively to process which, it is impossible to arbitrarily discharge.People are in a large number using biochemical or single at present
The method of pure burning evaporation process carries out the advanced treating containing organic wastewater, and the waste water containing long-chain macromolecule organic matter is very
Hardly possible destroys the long-chain of macromolecular by biochemical treatment or low-temperature burning, and can be to existing biochemical treatment apparatus or burning evaporation
System is impacted and is affected.
When biochemical or improved biochemical technology carries out the advanced treating containing organic wastewater, the floor space of its equipment is big,
Processing cost is high.Somebody proposes the phenol water evaporation of the conventional gasification furnace of fixed bed or two-part water-gas generators and melts down scheme,
But this scheme is confined to be suitable for the little low-pressure gas producer of wastewater flow rate, can only process part waste water, and production process
Problem is still suffered from device security.Activated carbon has good selective absorbing to containing the organic matter in organic wastewater, but
Its adsorption capacity is low, and needs the complex process of adsorption-regeneration, and its operating cost is very high.
When being processed to high-concentration hardly-degradable organic polluting water using microbial technique, often because pollutant is to micro-
Biological toxic effect or biochemical are poor, it is impossible to reach processing intent.And using the method that evaporates to high pollution organic wastewater
Although processed having applied, organic pollution is by pollution transportation in evaporation process in the way of gas
To air, final disposal is not carried out to organic pollution.
Sum it up, a technical problem for needing those skilled in the art urgently to solve at present is：How to realize harmless
Change the waste water processed containing organic matter, while improving environmental benefit, realize the recycling of organic wastewater.
Content of the invention
The purpose of the present invention is exactly to solve the above problems, there is provided a kind of harmless treatment process of organic wastewater and
Device, combustion decomposition generates CO to long-chain macromolecule organic matter under the high temperature conditions2And H2O, and can continue and O2, to there is oxidation in C anti-
CO, H should be generated2Available gas composition；Vapor is substituted as reaction raw materials by the use of organic wastewater, in coal gas of high temperature producer
In be sufficiently mixed with coal dust, directly can generate industrial gas by combustion oxidation without the need for catalyst, solve organic wastewater difficulty
The problem of reason, innocent treatment procedure realize waste water reuse, reduce environmental protection pressure, reach the purpose for improving the performance of enterprises.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of harmless treatment process of organic wastewater, comprises the following steps：
(1) the external waste water containing organic matter is delivered in wastewater trough by pipeline or tank car；
(2) mechanical filter is carried out to the organic wastewater in step (1), to remove the suspension in organic wastewater and consolidate
Body impurity, the impurity content ＜ 1% after filtration in organic wastewater；
(3) the VFC flow and pressure through the organic wastewater after step (2) filtration by plunger displacement pump, and will pressurization
Organic wastewater afterwards is delivered in waste water preheater and carries out steam preheating process, and after preheating, steam pressure is 0.5-1.0MPa；
(4) burner first that will be delivered to gas generator through 50～55 DEG C of organic wastewaters after step (3) preheating leads to
In road, oxygen is passed through burner second channel, through CO2100～110 DEG C of coal dusts being blown in burner third channel, three passages
Medium enters gas generator combustion zone from after burner ejection and combustion oxidation reaction occurs, and combustion oxidation course of reaction generates industry
Coal gas；The flow for entering the organic wastewater of gas generator is less than 5m3/ h, in gas generator, temperature is 950-1050 DEG C,
Pressure 4.5-5.0MPa.
In step (1), in the organic wastewater containing caprolactam, butyric acid, butyraldehyde, pungent dilute aldehyde, toluene, cyclohexanone,
One or more in cyclohexanone oxime, dimethylformamide, dimethylamine, DMF, having containing long-chain macromolecule
Machine thing, with environmental protection treatment difficult, processing cost is high the features such as.
In step (3), organic wastewater is through plunger displacement pump pressurized control pressure 5.5-6.0MPa.
In step (4), the industrial gas of generation includes that volume fraction is the water-gas of 91%-93%, 4%-10%
CO2, 1%-3% methane, balance of nitrogen.
A kind of harmless treatment device of organic wastewater, including be linked in sequence successively wastewater trough, filter, plunger
Pump, waste water preheater and gas generator, the filter are pressure filter, are provided with steaming above the waste water preheater
Vapor inlet, arranges drain valve below the waste water preheater, the top connection of the gas generator is internally provided with including the
The burner of one passage, second channel and third channel, the ejiction opening of the burner are connected in conveying gas generator, the coal
Periodic off-gases outlet is provided with pipeline between gas producer and the waste water preheater.
Beneficial effects of the present invention：
1st, technological process is simple, needs the technological parameter of control easily to adjust less, and parameter mainly includes that wastewater flow, coal gas are sent out
Raw stove pressure and temperature；
2nd, the waste water containing organic matter directly substitutes steam as raw material, steam saving amount, energy saving；
3rd, the combustion oxidation reaction of organic wastewater and coal dust in coal gas of high temperature producer can be directly without the need for catalyst
Reaction, cost-effective；
4th, efficiently solve the intractable problem of long-chain macromolecule organic matter in organic wastewater, turn waste into wealth, environmental protection high
Effect, the coal gas purity of production are higher, are truly realized the harmless treatment of organic wastewater, reach the mesh for improving the performance of enterprises
, according to 3m3/ h waste water yield can save 11,250,000 yuan of cost of sewage disposal every year calculating.
Description of the drawings
Fig. 1 is the process flow diagram of the present invention；
Fig. 2 is the burner schematic diagram of the gas generator in the present invention；
Wherein, 1, first passage, 2, second channel, 3, third channel.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of harmless treatment process of organic wastewater, as shown in figure 1, comprise the following steps：
(1) the external waste water containing organic matter is delivered in wastewater trough by pipeline or tank car, is contained in organic wastewater
Caprolactam, butyric acid, butyraldehyde, pungent dilute aldehyde, toluene, cyclohexanone, cyclohexanone oxime, dimethylformamide, dimethylamine, Methylethyl first
One or more in acid amides, because of the organic matter containing long-chain macromolecule in waste water, environmental protection treatment is difficult, processing cost is also higher；
(2) carry out mechanical filter process to the organic wastewater in step (1), remove suspension in organic wastewater and
Solid impurity, the impurity content 0.08% after the mechanical filter of mechanical filter in organic wastewater；
(3) pass through plunger displacement pump VFC flow 4.5m through the organic wastewater after step (2) filtration3/ h, pressure
5.5MPa, and by pressurization after organic wastewater be delivered in waste water preheater and carry out steam preheating process, steam pressure is
0.5MPa, the organic wastewater temperature after the preheating of waste water preheater are 50 DEG C；
(4) gas generator, temperature in control gas generator will be delivered to through the organic wastewater after step (3) preheating
For 1050 DEG C, pressure 5.0MPa, in organic wastewater, combustion decomposition is water and carbon dioxide to organic matter under the high temperature conditions, and gives up
Aqueous vapor chemical conversion vapor and coal dust carry out oxidation reaction process, water that organic matter is resolved into and carbon dioxide as available gas,
Continue to participate in oxidizing fire reaction and generate industrial gas.
After organic wastewater and coal dust are through high-temp combustion, the residue of generation is arranged by the slag-drip opening of gas generator with slag
Go out, and be conveyed to brickmaking factory to reuse.
Under the high temperature conditions, without the need for any catalyst be catalyzed can occur combustion oxidation reaction, organic wastewater with
The main chemical reactions that coal dust occurs include：
(1) combustion process of the organic matter in coal gas of high temperature producer, is decomposed into water and carbon dioxide：
CHO (organic matter)+O2→CO2+H2O
(2) reaction that water vapour is occurred in coal gas of high temperature producer with coal dust has：
H2O+C→H2+CO
H2+O2→H2O
C+CO2→2CO
CO+O2→CO2
In the organic wastewater harmless treatment process, after testing, the industrial gas of generation includes：Volume fraction is
91% water-gas, 6% CO2, 1% methane, balance of nitrogen, gas generator flow field is stable, and the working of a furnace is stable,
Slag phosphorus content is without significant change.
A kind of harmless treatment device of organic wastewater, including be linked in sequence successively wastewater trough, filter, plunger
Pump, waste water preheater and gas generator, filter is pressure filter, removes suspension and solid in organic wastewater
Impurity；Steam inlet is provided with above waste water preheater, and steam enters in waste water preheater to enter organic wastewater from the import
Row preheating, arranges drain valve below waste water preheater, the condensate in warm flows out waste water preheater from drain valve；Coal gas
The top connection of producer is internally provided with the burner including first passage 1, second channel 2 and third channel 3, the ejection of burner
Mouth is connected in conveying gas generator, and organic wastewater enters gas generator from burner and participates in oxidizing fire reaction；In addition,
Periodic off-gases outlet is provided with pipeline between gas generator and waste water preheater, is not sent out for discharging in gas generator
Raw reaction other, such as nitrogen.
Embodiment 2
A kind of harmless treatment process of organic wastewater, as shown in figure 1, comprise the following steps：
(1) the external waste water containing organic matter is delivered in wastewater trough by pipeline or tank car, is contained in organic wastewater
Caprolactam, butyric acid, butyraldehyde, pungent dilute aldehyde, toluene, cyclohexanone, cyclohexanone oxime, dimethylformamide, dimethylamine, Methylethyl first
One or more in acid amides, because of the organic matter containing long-chain macromolecule in waste water, environmental protection treatment is difficult, processing cost is also higher；
(2) carry out mechanical filter process to the organic wastewater in step (1), remove suspension in organic wastewater and
Solid impurity, the impurity content 0.05% after the mechanical filter of mechanical filter in organic wastewater；
(3) pass through plunger displacement pump VFC flow 3m through the organic wastewater after step (2) filtration3/ h, pressure 6.0MPa,
And by pressurization after organic wastewater be delivered in waste water preheater and carry out steam preheating process, steam pressure is 1.0MPa, gives up
Organic wastewater temperature after water preheater preheating is 55 DEG C；
(4) gas generator, temperature in control gas generator will be delivered to through the organic wastewater after step (3) preheating
For 950 DEG C, pressure 4.5MPa, in organic wastewater, combustion decomposition is water and carbon dioxide to organic matter under the high temperature conditions, and gives up
Aqueous vapor chemical conversion vapor and coal dust carry out oxidation reaction process, water that organic matter is resolved into and carbon dioxide as available gas,
Continue to participate in oxidizing fire reaction and generate industrial gas.In the organic wastewater harmless treatment process, after testing, the work of generation
Industry coal gas includes：Volume fraction is 93% water-gas, 4% CO2, 2% methane, balance of nitrogen, gas generator
Flow field is stable, and the working of a furnace is stable, and slag phosphorus content is without significant change.
The harmless treatment device of the organic wastewater as described in Example 1, is repeated no more.
Embodiment 3
(1) the external waste water containing organic matter is delivered in wastewater trough by pipeline or tank car, is contained in organic wastewater
Caprolactam, butyric acid, butyraldehyde, pungent dilute aldehyde, toluene, cyclohexanone, cyclohexanone oxime, dimethylformamide, dimethylamine, Methylethyl first
One or more in acid amides, because of the organic matter containing long-chain macromolecule in waste water, environmental protection treatment is difficult, processing cost is also higher；
(2) carry out mechanical filter process to the organic wastewater in step (1), remove suspension in organic wastewater and
Solid impurity, the impurity content 0.03% after the mechanical filter of mechanical filter in organic wastewater；
(3) pass through plunger displacement pump VFC flow 1m through the organic wastewater after step (2) filtration3/ h, pressure 5.3MPa,
And by pressurization after organic wastewater be delivered in waste water preheater and carry out steam preheating process, steam pressure is 0.6MPa, gives up
Organic wastewater temperature after water preheater preheating is 53 DEG C；
(4) gas generator, temperature in control gas generator will be delivered to through the organic wastewater after step (3) preheating
For 1000 DEG C, pressure 4.8MPa, in organic wastewater, combustion decomposition is water and carbon dioxide to organic matter under the high temperature conditions, and gives up
Aqueous vapor chemical conversion vapor and coal dust carry out oxidation reaction process, water that organic matter is resolved into and carbon dioxide as available gas,
Continue to participate in oxidizing fire reaction and generate industrial gas.In the organic wastewater harmless treatment process, after testing, the work of generation
Industry coal gas includes：Volume fraction is 92% water-gas, 6% CO2, 1% methane, balance of nitrogen, gas generator
Flow field is stable, and the working of a furnace is stable, and slag phosphorus content is without significant change.
The harmless treatment device of the organic wastewater as described in Example 1, is repeated no more.
Present invention process flow process is simple, and the technological parameter that needs are controlled is few, easy regulation；Waste water containing organic matter is directly substituted
Steam is used as raw material, steam saving amount, energy saving；High-temp combustion oxidation reaction is without the need for catalyst, cost-effective；Effectively solving
Long-chain macromolecule organic matter intractable problem in organic wastewater, turns waste into wealth, environment-friendly high-efficiency, the coal gas purity of production compared with
Height, is truly realized the harmless treatment of organic wastewater, has reached the purpose for improving the performance of enterprises, according to 3m3/ h waste water is produced
Measure to calculate, 11,250,000 yuan of cost of sewage disposal can be saved every year.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction that encloses, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
The various modifications that makes by needing to pay creative work or deformation are still within protection scope of the present invention.
Claims (6)
1. a kind of harmless treatment process of organic wastewater, is characterized in that, comprise the following steps：
(1) the external waste water containing organic matter is delivered in wastewater trough；
(2) organic wastewater in step (1) is filtered, to remove the suspension in organic wastewater and solid impurity,
Impurity content ＜ 1% after filtration in organic wastewater；
(3) through the organic wastewater after step (2) filtration by the VFC flow of plunger displacement pump and pressure, and by pressurization after
Organic wastewater is delivered in waste water preheater carries out steam preheating process, and steam pressure during steam preheating process is 0.5-
1.0MPa；
(4) will be delivered in the burner first passage of gas generator through 50～55 DEG C of organic wastewaters after step (3) preheating,
Oxygen is passed through burner second channel, through CO2100～110 DEG C of coal dusts being blown in burner third channel, the medium of three passages from
Burner enters gas generator combustion zone and combustion oxidation reaction occurs after spraying, combustion oxidation course of reaction generates industrial gas；
The flow for entering the organic wastewater of gas generator is less than 5m3/ h, in gas generator, temperature is 950-1050 DEG C, pressure
4.5-5.0MPa.
2. a kind of harmless treatment process of organic wastewater as claimed in claim 1, is characterized in that, in step (1), described
Contain caprolactam, butyric acid, butyraldehyde, pungent dilute aldehyde, toluene, cyclohexanone, cyclohexanone oxime, N, N dimethyl formyl in organic wastewater
One or more in amine.
3. a kind of harmless treatment process of organic wastewater as claimed in claim 1, is characterized in that, in step (3), organic
Thing waste water is through plunger displacement pump pressurized control pressure 5.5-6.0MPa.
4. a kind of harmless treatment process of organic wastewater as claimed in claim 1, is characterized in that, waste water preheater is preheated
Organic wastewater temperature afterwards is 50-55 DEG C.
5. a kind of harmless treatment process of organic wastewater as claimed in claim 1, is characterized in that, in step (4), produce
Industrial gas include that volume fraction is the water-gas of 91%-93%, the CO of 4%-10%2, 1%-3% methane, balance of
Nitrogen.
6. a kind of harmless treatment process of the organic wastewater as described in claim 1-5 any one, it is characterised in that institute
Stating harmless treatment process is carried out in a kind of harmless treatment device of organic wastewater, the organic wastewater innoxious
Processing meanss include wastewater trough, filter, plunger displacement pump, waste water preheater and the gas generator being linked in sequence successively, the mistake
Filter is pressure filter, is provided with steam inlet above the waste water preheater, arranges and dredge below the waste water preheater
Water valve, the top connection of the gas generator are internally provided with the burner including first passage, second channel and third channel,
The ejiction opening of the burner is connected to the pipe in conveying gas generator, between the gas generator and the waste water preheater
Periodic off-gases outlet is provided with road.
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| CN106636500B (en) * | 2016-12-27 | 2018-10-23 | 中钢集团鞍山热能研究院有限公司 | A kind of method and device of blast furnace Slag treatment coked waste water |
| CN108410505A (en) * | 2018-04-04 | 2018-08-17 | 绍兴化工有限公司 | A method of preparing water-gas using organic dangerous waste |
| CN108731000B (en) * | 2018-07-16 | 2023-10-20 | 衢州市求是科技联合会 | Flameless combustion and wet oxidation treatment device for organic wastewater |
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| CN1804003A (en) * | 2005-12-29 | 2006-07-19 | 华东理工大学 | Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance |
| CN101906327A (en) * | 2010-08-06 | 2010-12-08 | 霍镰泉 | Recovery processing method for phenol water of gas furnace |
| CN101974350A (en) * | 2010-08-09 | 2011-02-16 | 高邮市林源科技开发有限公司 | Technological process for producing biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology |
| CN102851078A (en) * | 2011-06-27 | 2013-01-02 | 贵州兴化化工股份有限公司 | Method for comprehensive utilization of alcohol-containing wastewater using fixed bed gas furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107110A (en) * | 2010-11-17 | 2012-06-07 | Nippon Steel Corp | Method for treating gas-treatment drainage, gasification apparatus of carbonaceous material, and method for treating carbonaceous material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804003A (en) * | 2005-12-29 | 2006-07-19 | 华东理工大学 | Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance |
| CN101906327A (en) * | 2010-08-06 | 2010-12-08 | 霍镰泉 | Recovery processing method for phenol water of gas furnace |
| CN101974350A (en) * | 2010-08-09 | 2011-02-16 | 高邮市林源科技开发有限公司 | Technological process for producing biomass fuel gas without wastewater discharge by using phenol water gasification and recovery technology |
| CN102851078A (en) * | 2011-06-27 | 2013-01-02 | 贵州兴化化工股份有限公司 | Method for comprehensive utilization of alcohol-containing wastewater using fixed bed gas furnace |
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